Dien Bien Prov., Tua Chua Distr., Tua Thang Municipality, Ta Xi Lang village, around point 21°57′17”N 103°25′31”E.
Highly degraded primary and secondary evergreen broadleaved forest on very steep slopes and on tops of remnant mountains composed with solid limestone at elevation 850-950 m a.s.l.
Pendent lithophyte on shady mossy cliff on very steep rocky shady slope. Flowers pinkish, lip with 3 yellow warts. Not common.